Armenta said the teacher told her the post came after a student pulled a prank in class.

"The teacher told me she never intended to harm anyone. She was venting and meant nothing by this," Armenta said.

But Armenta said teachers should know at this point they need to be mindful of anything they post on social media, even if it's off duty and off district property. It says it in their social networking policy.

"We don't have the luxury of knowing exactly what someone means in a posting," Armenta said.

That's why APS got law enforcement involved. The sheriff's office found no criminal wrongdoing, but APS has launched a personnel investigation.

One Albuquerque parent who didn't want to be identified said sometimes teachers cross the line online.

"You're supposed to trust them, but it's scary," said the parent.

The teacher should face a disciplinary board this week, and could face suspension or even termination.